The income gap between top executives and workers has doubled over the last 15 years.

They also called for closing income gaps between women and men.

This helps to reduce the income gap between the rich and poor.

Yet by other measures, the income gap has expanded in the last decade.

Market forces would place a check on the exploding income gap.

Workers' compensation by itself would leave a huge income gap.

The income gap between black and white families is also significant.

The government says that the aging population, more than anything else, has caused income gaps.

Taking the European average, the income gap sets men and women 17.8% apart.

Only in two countries is this income gap even wider.